Cauldron Familiar 
Synergy is a rough depiction of how well and uniquely a card pairs with a commander. Read more on the About page.
| # | Card | Synergy |
|---|---|---|
| 176 | Persistent Specimen | 0.05 |
| 176 | Cadaver Imp | 0.05 |
| 176 | Blood Pact | 0.05 |
| 179 | Eviscerator's Insight | 0.04 |
| 179 | Crypt Rats | 0.04 |
| 179 | Demon's Disciple | 0.04 |
| 182 | Arcane Signet | 0.03 |
| 182 | Epicure of Blood | 0.03 |
| 182 | Accursed Marauder | 0.03 |
| 185 | The Dross Pits | 0.02 |
| 186 | Fake Your Own Death | 0.01 |
| 186 | Mirkwood Bats | 0.01 |
| 186 | Mortuary Mire | 0.01 |
| 189 | Dimir House Guard | — |
| 189 | Ornithopter of Paradise | — |
| 191 | Barren Moor | -0.02 |
| 192 | Fellwar Stone | -0.03 |
| 192 | Blood Fountain | -0.03 |
| 194 | Opal Palace | -0.05 |
| 195 | Sign in Blood | -0.07 |
| 196 | Snuff Out | -0.09 |
| 197 | Go for the Throat | -0.1 |
| 198 | Syphon Mind | -0.11 |
| 199 | Feed the Swarm | -0.12 |
| 200 | Commander's Sphere | -0.16 |